//
//  PeripheralInfoViewController.m
//  SITABLE
//
//  Created by songjun on 16/9/8.
//  Copyright © 2016年 Sita. All rights reserved.
//

#import "PeripheralInfoViewController.h"
@interface PeripheralInfoViewController ()
@end
@implementation PeripheralInfoViewController
- (void)viewDidLoad {
    [super viewDidLoad];
    self.title = @"外设基本信息";
    
    [_peripheral setDelegate:self];
    
    [_peripheral discoverServices:nil];
    
    sitaCBCharacteristics = [NSMutableArray arrayWithCapacity:1];

}

- (void)centralManagerDidUpdateState:(CBCentralManager *)central
{
    //NSLog(@"%s",__func__);
}




-(void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error
{
    //NSLog(@"%s",__func__);
    if (error)
    {
        //NSLog(@">>>Discovered services for %@ with error: %@", peripheral.name, [error localizedDescription]);
        return;
    }
    
    for (CBService *service in peripheral.services) {
       // NSLog(@"%@",service.UUID);
        //扫描每个service的Characteristics，扫描到后会进入方法： -(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
        [peripheral discoverCharacteristics:nil forService:service];
    }
    
}


//扫描到Characteristics
-(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error{
    if (error)
    {
        NSLog(@"error Discovered characteristics for %@ with error: %@", service.UUID, [error localizedDescription]);
        return;
    }
    
    for (CBCharacteristic *characteristic in service.characteristics)
    {
        //NSLog(@"service:%@ 的 Characteristic: %@",service.UUID,characteristic.UUID);
        [sitaCBCharacteristics addObject:characteristic];
    }
    
    //获取Characteristic的值，读到数据会进入方法：-(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
    for (CBCharacteristic *characteristic in service.characteristics){
        {
            [peripheral readValueForCharacteristic:characteristic];
            
          
            
            

        }
    }
    
    //搜索Characteristic的Descriptors，读到数据会进入方法：-(void)peripheral:(CBPeripheral *)peripheral didDiscoverDescriptorsForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
    for (CBCharacteristic *characteristic in service.characteristics){
        [peripheral discoverDescriptorsForCharacteristic:characteristic];
    }
    
    
}



//获取的charateristic的值
-(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error{
    //打印出characteristic的UUID和值
    //!注意，value的类型是NSData，具体开发时，会根据外设协议制定的方式去解析数据
//    NSLog(@"characteristic uuid:%@  value:%@",characteristic.UUID,characteristic.value);
    
    NSString *result  =[[ NSString alloc] initWithData:characteristic.value encoding:NSUTF8StringEncoding];
    NSLog(@"哈哈啊:解析一下%@",result);


    //if ([result isEqualToString:@"Apple Inc"]) {
    
    //}
}



//搜索到Characteristic的Descriptors
-(void)peripheral:(CBPeripheral *)peripheral didDiscoverDescriptorsForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error{
    
    //打印出Characteristic和他的Descriptors
    NSLog(@"characteristic uuid:%@",characteristic.UUID);
    for (CBDescriptor *d in characteristic.descriptors) {
        NSLog(@"Descriptor uuid:%@",d.UUID);
    }
}
//

//获取到Descriptors的值
-(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForDescriptor:(CBDescriptor *)descriptor error:(NSError *)error{
    //打印出DescriptorsUUID 和value
    //这个descriptor都是对于characteristic的描述，一般都是字符串，所以这里我们转换成字符串去解析
    NSLog(@"characteristic uuid:%@  value:%@",[NSString stringWithFormat:@"%@",descriptor.UUID],descriptor.value);
}



//写数据
-(void)writeCharacteristic:(CBPeripheral *)peripheral
            characteristic:(CBCharacteristic *)characteristic
                     value:(NSData *)value{
    
    //打印出 characteristic 的权限，可以看到有很多种，这是一个NS_OPTIONS，就是可以同时用于好几个值，常见的有read，write，notify，indicate，知知道这几个基本就够用了，前连个是读写权限，后两个都是通知，两种不同的通知方式。
    /*
     typedef NS_OPTIONS(NSUInteger, CBCharacteristicProperties) {
     CBCharacteristicPropertyBroadcast												= 0x01,
     CBCharacteristicPropertyRead													= 0x02,
     CBCharacteristicPropertyWriteWithoutResponse									= 0x04,
     CBCharacteristicPropertyWrite													= 0x08,
     CBCharacteristicPropertyNotify													= 0x10,
     CBCharacteristicPropertyIndicate												= 0x20,
     CBCharacteristicPropertyAuthenticatedSignedWrites								= 0x40,
     CBCharacteristicPropertyExtendedProperties										= 0x80,
     CBCharacteristicPropertyNotifyEncryptionRequired NS_ENUM_AVAILABLE(NA, 6_0)		= 0x100,
     CBCharacteristicPropertyIndicateEncryptionRequired NS_ENUM_AVAILABLE(NA, 6_0)	= 0x200
     };
     
     */
    NSLog(@"%lu", (unsigned long)characteristic.properties);
    
    //只有 characteristic.properties 有write的权限才可以写
    if(characteristic.properties & CBCharacteristicPropertyWrite){
        /*
         最好一个type参数可以为CBCharacteristicWriteWithResponse或type:CBCharacteristicWriteWithResponse,区别是是否会有反馈
         */
        [peripheral writeValue:value forCharacteristic:characteristic type:CBCharacteristicWriteWithResponse];
    }else{
        NSLog(@"该字段不可写！");
    }
    
    
}


- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
}


- (IBAction)testBtnAction:(UIButton *)sender
{
    NSString *newString = @"sita";
    NSData *data =[newString dataUsingEncoding:NSUTF8StringEncoding];
    for (int i = 0; i<sitaCBCharacteristics.count; i++) {
        CBCharacteristic *testCa = [sitaCBCharacteristics objectAtIndex:i];
        [self writeCharacteristic:_peripheral characteristic:testCa value:data];
        
    }
    
    
}
@end
